How do I restrict incoming and outgoing calls on Nokia 9300(i)/9500 Communicators?

You can restrict incoming or outgoing calls, and international calls. Call barring is a network service. For availability, contact your service provider or network operator. Note that call barring and call diverting cannot be active at the same time. When calls are barred, calls may still be possible to certain official emergency numbers.To use the call barring service, you need the barring password that you receive from your service provider when you subscribe to the service.To bar voice calls:1. Press Telephone.2. Press Menu, and select Settings > Voice call barring.3. Select one of the following barring options:- Outgoing calls. Prevents making voice calls with your device.- Incoming calls. Bars incoming calls.- International calls. Prevents calling to foreign countries or regions.- Incoming calls when abroad. Bars incoming calls when outside your home country.- International except home country. Prevents calls to foreign countries or regions, but to allow calls to your home country.4. Enter the barring password, and press OK.